nanog mailing list archives

Re: Digital Island sponsors DoS attempt?


From: Valdis.Kletnieks () vt edu
Date: Fri, 26 Oct 2001 13:22:22 -0400

On Fri, 26 Oct 2001 12:01:38 CDT, "Quibell, Marc" said:
That's all fine Valdis, but no one does MTU check on the internet or pmtu
checks. This is all LAN-based...

Umm.. I'm confused.  What's all LAN-based?

Or you saying that PMTU Discovery isn't used *at all*?

Or that it's not *widely* used, mostly because a large chunk of the net *is*
stuck at 1500-byte MTUs, and a large fraction of the rest has broken PMTU
discovery because of boneheaded ICMP filtering?

-- 
                                Valdis Kletnieks
                                Operating Systems Analyst
                                Virginia Tech


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